Waste Water Engineering If the depletion of oxygen is found to be 5 ppm after incubating a 2.5% solution of sewage sample for 5 days at 21°C, B.O.D. of the sewage is 200 ppm 150 ppm 50 ppm 100 ppm 200 ppm 150 ppm 50 ppm 100 ppm ANSWER DOWNLOAD EXAMIANS APP
Waste Water Engineering For sewer mains of 0.5 to 1 m diameter, the ratio of maximum daily sewage flow to the average daily sewage flow is assumed 3 1.5 2 2.5 3 1.5 2 2.5 ANSWER DOWNLOAD EXAMIANS APP
Waste Water Engineering The most effective arrangement for diverting excess storm water into a natural drainage, is Leaping weir Overflow weir None of these Siphon spill way Leaping weir Overflow weir None of these Siphon spill way ANSWER DOWNLOAD EXAMIANS APP
Waste Water Engineering If 2% solution of a sewage sample is incubated for 5 days at 20°C and depletion of oxygen was found to be 5 ppm, B.O.D. of the sewage is 200 ppm 225 ppm None of these 250 ppm 200 ppm 225 ppm None of these 250 ppm ANSWER DOWNLOAD EXAMIANS APP
Waste Water Engineering The value of Chezy’s constant C = 157.6/(1.81 + K/ ) is used in Kutter’s formula Chezy’s formula Bazin’s formula Manning’s formula Kutter’s formula Chezy’s formula Bazin’s formula Manning’s formula ANSWER DOWNLOAD EXAMIANS APP
Waste Water Engineering The flow velocity in detritus tanks is 1.25 m/sec None of these 0.09 m/sec 0.05 m/sec 1.25 m/sec None of these 0.09 m/sec 0.05 m/sec ANSWER DOWNLOAD EXAMIANS APP
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